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Finding the Fourth Proportional to 437,547.80, 656,240.70 and 121,939.40

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Solution

The fourth proportional to 437,547.80, 656,240.70 and 121,939.40 is: 182,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,547.80 : 656,240.70 = 121,939.40 : x
  2. Step 2: Convert to fraction form
    437,547.80/656,240.70 = 121,939.40/x
  3. Step 3: Cross multiply
    437,547.80x = 656,240.70 × 121,939.40
  4. Step 4: Simplify right side
    437,547.80x = 80,021,597,213.58
  5. Step 5: Solve for x
    x = 80,021,597,213.58/437,547.80
  6. Step 6: Final answer
    x = 182,886.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.